UK grid carbon intensity in gCO2/kWh with generation mix, the cleanest and dirtiest half hour in the next 24 hours and optional postcode region

Spain hourly electricity price today - OMIE wholesale spot and PVPC regulated tariff in EUR/MWh with cheapest and priciest hours from Red Electrica

Euro area and EU country inflation from Eurostat HICP - monthly annual rate of change for DE, FR, ES, IT, EA and others, with the latest reading and history

NOAA SPC local storm reports for today or yesterday - tornado, damaging wind and hail reports with location, time, magnitude and state counts

Estimated maximum heart rate by Tanaka, Fox or Gulati formula and five training zones in beats per minute, with Karvonen reserve zones when resting rate is given

Estimated blood alcohol concentration from weight, sex, drinks and hours using the Widmark formula, with sobering time and legal limit references

Hong Kong Observatory current temperature, humidity, UV index, district rainfall and warnings with the general situation and a 9-day forecast

Pregnancy due date by Naegele's rule from last period or conception with cycle adjustment, gestational age today, trimester and key milestone dates

Hedera account lookup - HBAR balance, token balances, EVM address, staking node, pending reward, creation time and network supply from the mirror node

Calories burned for 30 activities from MET values, body weight and minutes, with net calories above resting and similar-intensity activities

Body fat percentage from tape measurements using the US Navy method with ACE category, healthy range and fat and lean mass when weight is supplied

Worldwide earthquakes from the EMSC for the last 1-168 hours at or above a minimum magnitude - region, depth, coordinates, agency and the strongest event

Find a token's address and decimals on 11+ chains from the Uniswap default token list by symbol, name or contract address, filterable by chain id

Decode a 4-byte EVM function selector or 32-byte event topic into candidate signatures from OpenChain and 4byte with the verified one first and collision warnings

Safe multisig wallet configuration on 8 chains - owners, signature threshold, nonce, enabled modules, guard, version and plain-language risk notes

BMI, healthy weight range, BMR, daily calories (TDEE) by activity level, calories to lose or gain, body surface area and ideal weight

Black-Scholes-Merton price for European calls and puts with delta, gamma, vega, theta, rho, intrinsic and time value, moneyness and put-call parity check

A/B test significance from visitors and conversions - lift, z-score, p-value, confidence interval, winner and the sample size needed per variant

Brazil central bank time series - Selic rate, IPCA and IGP-M inflation, USD/BRL, EUR/BRL, CDI and unemployment from Banco Central SGS

Video frame count and frame interval from frame rate and duration